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Note 4 - Property (Tables)
3 Months Ended
Mar. 31, 2017
Notes Tables  
Property, Plant and Equipment [Table Text Block]
 
 
March 31,
2017
 
 
December 31,
2016
 
 
 
(in thousands)
 
Land
  $
5,059
    $
5,059
 
Land improvements
   
18,051
     
18,051
 
Buildings
   
24,884
     
24,884
 
Machinery and equipment
   
10,965
     
10,965
 
Total property
   
58,959
     
58,959
 
Less accumulated depreciation
   
33,631
     
33,215
 
Net property
  $
25,328
    $
25,744